Antitheft device



A. J. G. GETTY ANTITHEFT DEVICE Dec. 26, 1933.

Filed Sept. 8, 1952 M I nuentor jzad'r/Vdariam 'ez Patented Dec. 26,1933 UNITED STATES 1,940,747 AN'IITHEFT DEVICE Andrew J. Gordon Getty,McComas, W. Va. Application September 8, 1932. Serial No. 632,218

2 Claims.

This invention relates to devices for securing an electric bulb in asocket against unauthorized removal.

In accordance with the present invention it is proposed to provide thestem of the light bulb, and the lamp socket with means for accommodatinga lock, in a manner to prevent unauthorized removal of the bulb from thesocket; and more particularly it is an object of this invention to soprovide the stem of the lamp bulb and the socket as to permit of the useof a more or less conventional padlock for securing the stem'of the bulbwithin the socket.

The invention together with its numerous objects and advantages will bebest understood from a study of the following description taken inconnection with the accompanying drawing,

wherein:-

Figure .1 is an elevational view showing the application of theinvention.

Figure 2 is a sectional view substantially on the' line 2-2 of Figure 1.

Figure 3 is an elevational View of the stem portion of a lamp bulb.

Figure 4 is a view taken at right angles to Figure 3.

Figure 5 is a plan view of a conventional form of padlock, the shackleand barrel being shown separated, and a portion of the insulating coverfor the shackle broken away and shown in section.

Figure 6 is a sectional view on the line 6-6 of Figure 5.

Referring in detail to the drawing it will be seen that the invention isshown as applied to a conventional lamp socket 5, and an electric bulb 6provided with the usual stem '7 adapted to be screwed into the socket 5.

As shown in the drawing it is proposed to provide the stem 7 of the bulb6 with a groove 8 elongated circumferentially of the stem, and toprovide in the walls of the socket shell 5 a pair of relatively spacedapertures 9 with which the taken substantially groove 8 alines when thestem 7 is in final thread-' ed position within the socket 5 as will beclear from a study of Figure 2.

PATENT OFFICE lock including the barrel 10a and the shackle 10b. In thepresent instance the shackle 10b may have either or both sides thereofcovered by a jacket 11 of suitable insulating material such as rubber orthelike and as shown in the drawing.

In using the lock, one side of the shackle 10b is passed through thealigned groove 8 and apertures 9 as shown in Figure 2 after which thebarrel 10a is applied to the ends of the sides of said 7 shackle 10binthe usual manner, and it will be apparent that with the lock thusapplied to the stem '7 and socket 5 an unscrewing of the bulb from thesocket is positively prevented, and the bulb is thus held againstunauthorized removal.

It will be noted, as shown in Figure 2, that the space between theparallel sides of the shackle 10b in actual practice will be such as toaccommodate the portion of the socket 5 between the apertures 9 ina'manner to preclude the application of a suitable tool to the shackle10b for the purpose of severing the same or otherwise efiecting aremoval of the lock.

It is also to be understood that while I have herein shown and describedthe invention as embodying a combination lock, a key controlled lock orthe like may be used as may be found desirable.

Even though I have herein shown and described the preferred embodimentof the invention, it is to be understood that the same is susceptible offurther changes, modifications and improvements coming within the scope.of the appended claims.

Having thus described the invention, what I claim as new is: i

1. In combination, a lamp socket provided with a pair of spacedapertures in the wall thereof, a bulb having a stem for threadedreception within the socket, and being also provided with a groove toalign with said apertures, and a padlock including a shackle engagingthe groove and apertures for securing the stem within the socket againstunauthorized removal.

2. In a device of the class described, a socket,

a lamp having a stem provided with a peripheral groove, and said sockethaving spaced apertures; and a padlock including a shackle having oneside thereof engaging the groove and extending through the apertures inthe socket.

ANDREW J. GORDON GETTY.

